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25 Cards in this Set
- Front
- Back
circle
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The set of all points that are the same distance from a fixed point, G.
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center (of circle)
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the one point every other point is the same distance away from
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radius
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the distance from the center to the edge of the circle
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diameter
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the line from one edge of the circle to another and it must go thru the center point.
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circumference
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the distance around the edge of the circle
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area
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the region inside the circle itself. area = pi x radius^2
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pi
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the circumference/diameter. an irrational number, you can approximate it by using 3.14 or 22/7
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central angle
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an angle with its vertex on the center of the circle
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arc
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is a part of a circle
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arc measure
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part of 360 degrees
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arc length
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when we want to know how far it is from one point to another as we travel along the arc
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minor arc
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the smallest arc between two points on the edge of a circle
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major arc
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the largest arc between two points on the edge of a circle
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concentric circles
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circles with the same center point.
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sector
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Are formed by the two radii of a central angle and the arc between their endpoints on the circle
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inscribed angle
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an angle with its vertex on the edge of the circle with its endpoints intersecting the circle
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intercepted arc
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the arc formed by an inscribed angle
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inscribed angle theorem
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The measure of any inscribed angle is half the measure its intercepted arc
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semicricle
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the endpoints of any diameter divide a circle into two congruent arcs.
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secant
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a line that intersects a circle at two points
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tangent
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a line that intersects a circle at only one point
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tangent/radius theorem
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Any tangent of a circle is perpendicular to a radius of the circle at their point of intersection and any pair of tangents drawn at the endpoints of a diameter are parallel
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chord
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a segment with its endpoints on the circle
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diameter/chord theorem
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1) if a diameter bisects a chor, then it is perpendicular to the chord.
2) If a diameter is perpendicular to a chord, then it bisects the chord. |
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volume
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base area x height
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